Mathematics - 27 November 2007

Thanks!

2007-11-27 12:50:56 · 22 answers · asked by americasnextopfashiondesigner 2

Mrs Chin, on reaching age 65, invested $18,000 of her insurance policy in AA bonds paying 8 1/2% and a common stock paying 7 1/2%. If her yearly income from these 2 investments is $1,470.00, how much did she invest in the bond and how much in the stock?

Anwrs: $12,000 , $6,000

Can some1 plz help me step by step solve this so i can understand


BIG THX!!

2007-11-27 12:47:36 · 1 answers · asked by KoF 2

I understand to set it to logarithmic form, which would then lead it to be ln5 (15) = 2x+7 (I think), but not sure what to do next.

2007-11-27 12:44:44 · 4 answers · asked by Anonymous

1)Evaluate the expression i^112 and write the result in the a+bi form .

The real number a equals_____

The real number b equals _____


2)If the Polar Form expression for a complex number is

9[cos(6pi/21)+ (i)sin(6pi/21)] then the rectangular form is a+bi, where a is _________ and b is ___________

2007-11-27 12:39:36 · 2 answers · asked by mhicks04 1

2007-11-27 12:36:18 · 7 answers · asked by isis r 1

estimate the answer to the following question:
what number is 1/4 of 31.975?


find the quotent of 120/5


7divided by 5 5/6

2007-11-27 12:31:42 · 5 answers · asked by Anonymous

Ok in my algebra class, I am doing intersection and union. I am not sure what i would do:
A={4,5,6,7}
B={5,6}
C={8,9,10}
D={6,9}

So what would I do if it was

A intersection B union C intersection D

Sorry I cant get the upside down u's on my computer
Thanks to anyone who can help!

2007-11-27 12:28:16 · 2 answers · asked by beachvolleysjh 2

solve for x..

c=x-a/b

2007-11-27 12:28:03 · 1 answers · asked by djtylomusic 1

Let f be the function that is given by
f(x)= ax+b/ x^2-c

i) the graph of f is symmetric with respect to the y-axis
ii)lim as x --> 2 + = infinity
iii) f ' (1) = -2

Determine the values of a, b, and c.

if anyone knows please help! I have spent hours and can't figure it out completely!

2007-11-27 12:26:50 · 1 answers · asked by r0ckch1c4lyfe 1

(19 - 9*19^(1/2)) / (19+9*19^(1/2))

2007-11-27 12:24:29 · 4 answers · asked by Question101 2

Let Q = (0,6) and R= (8,11) be given points in the plane. We want to find the point P=(x,0) on the x-axis such that the sum of distances PQ+PR is as small as possible. (Before proceeding with this problem, draw a picture!)
To solve this problem, we need to minimize the following function of x:
f(x)=
over the closed interval [a,b] where
a=
b=
We find that f(x) has only one critical number in the interval at x=

where f(x) has value of:

Since this is smaller than the values of f(x) at the two endpoints, we conclude that this is the minimal sum of distances.

2007-11-27 12:23:17 · 2 answers · asked by MA35 3

look. i really need some help. can you give me a hand with these questions? can you please help find the solution to these equations?

1. x-2>4
2. z-6<4
3. y-1/2>2
4. x-1.5<3.5
5. x+3>6
6. 19 7. d+1/4>3
8. -31/2 >c+1/2
9. y-4_>4
10. 25_ 11. 3t>6
12. 2x_<12
13. 15_<3y
14. -10_<4h
15. -6y<24

2007-11-27 12:22:31 · 5 answers · asked by Anonymous

the table shown represents a linear function. what is the value of "t" when h=157?
t=1 2 3 ?
h=2 7 12 157

2007-11-27 12:11:40 · 2 answers · asked by Anonymous

The sun has a diameter of 870,000. The earth a diameter of 8,000mi. If a 24 cm diameter basketball is used as the model for the sun, what should be the diameter of the model earth?

2007-11-27 12:09:05 · 9 answers · asked by Anonymous

2007-11-27 11:59:49 · 4 answers · asked by Anonymous

1.) - √-25

2.) (- √-25) ^2

2007-11-27 11:47:35 · 6 answers · asked by Juan C 6

Thank you show work please

2007-11-27 11:47:11 · 3 answers · asked by Shepard S 1

1) solve: sq rt. of (x+6) = x-6
2) 1/(x^2-6x+5) = (1/(x+5)) + (8/(x^2-25))

2007-11-27 11:45:47 · 1 answers · asked by Anonymous

how woud i find the antiderivative of 2Sin3x
and also the antiderivative of 1+2Cos2x

thanx!!!

2007-11-27 11:42:30 · 3 answers · asked by Anonymous

plz help can u tell me the equation too?

2007-11-27 11:36:52 · 8 answers · asked by Anonymous

1.4+5x6÷ n
2.(4x12)+n÷5)
3.15÷(nx2-7)+1
4.(30xn^2+20)÷7
5.(20÷2xn)^2+39

2007-11-27 11:35:15 · 2 answers · asked by ♪ ♫ AvA ♪ ♫ 5

I don't want you to tell me the answer. I just want you to tell me what to do.

I got 2 packets and I have 2 question I don't know how to do.

1)What is the mass of a falling rock if it hits the ground with a force of 147 newtons?

2) How do you calculate an average speed?


If you can tell me how to do this (not tell me the answer) I would be thankful.

2007-11-27 11:30:45 · 4 answers · asked by YaoYao D 5

these functions?

Are the f(g(x)) and g(f(x)) the same? please show work...

2007-11-27 11:20:30 · 4 answers · asked by Rise, Lord Vader 3

ll u + v ll^2 + ll u - v ll = 2 ll u ll^2 + 2 ll v ll^2

2007-11-27 11:16:48 · 1 answers · asked by Vince 1

3x - 2 (X+3) = X


7+2 (X+1) = 2X +9


5- 1/2(b-6) =4


2 (X-3) +5 = 3(X-1)

2007-11-27 11:14:54 · 6 answers · asked by Flordia_Grl 1

ok here is the info-
the pages in the yearbook are 11 inches long by 8 1/2 inches wide. the yearbook printing cost is calculated by the area of the photographs and printing, so it is necessary to know each photograph's area. one page of the yearbook contains a photograph which makes up the whole page except for a 1 1/4 inch margin on each of its sides. dont forget to remove margins .thank you.


heres the problem-
what is the are of the photograph on the page in square inches?(a picture may be drawn to help sovle this task). show and explain your work please. thank you.

2007-11-27 11:12:39 · 5 answers · asked by ~britbrat~ 1

1. Solve the equation: 7 x = 42.

A. x = - 6
B. x = 6

C. x = 7

D. x = - 7

2007-11-27 11:10:31 · 21 answers · asked by Anonymous

To the nearest thenth, find the measure of the acute angle that the given line forms with a horizontal line.

y= 5x +3

2007-11-27 11:06:03 · 13 answers · asked by Anonymous

Carpenters earn an average of $1120 less per month than deigners at a furniture factory in Smithville. The factory employs 3 designers and 15 carpenters. Let x represent the average month pay of a designer.

Which of the following functions correctly shows the relationship between the monthly payroll (P) and the wages of these employees?

(1). P = 3x + 15( x - 1120)

(2). P = 3(x - 1120) + 15x

(3). P = 3(x - 1120) + 15(x - 1120)

(4). P = 3 + x +15 + (x - 1120)

(5). P = 3(x)(15)(x - 1120)

2007-11-27 11:04:48 · 4 answers · asked by Anonymous

2007-11-27 10:57:05 · 13 answers · asked by bearmax7@sbcglobal.net 1